And her name is attached to a new limited liability company -- the Chan Zuckerberg Initiative -- to fund nonprofits and "[participate] in policy debates" that help "advance human potential and promote equality." In announcing their daughter's birth, the couple also pledged to donate 99% of their Facebook stock -- worth about $45 billion -- "during our lives" to promote equality and the human potential.

I am beyond thrilled to introduce you to our Max. Her being fills us with hope and inspires us to join others in creating a better future.

"Congratulations to Dr. Priscilla Chan for finishing your medical residency today! I'm so proud of you for all of the lives you've saved and families you've touched," Zuckerberg said about his wife on Facebook.

Congratulations to Dr. Priscilla Chan for finishing your medical residency today! I'm so proud of you for all of the...